talker
n
1 (esp with an adj 尤与形容词连用) person who talks (in the specified way) （以某种方式）谈话的人
a good/poor talker 健谈[不健谈]的人
She's a great talker, ie She talks a lot. 她很能说.
He's a fast talker, ie able to get out of trouble by talking cleverly. 他是个能言善辩的人.
2 person who talks a lot but does not act 空谈者; 讲空话的人
Don't rely on him to do anything he's just a talker. 什麽事都不要依靠他--他光会说空话.